<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>BMI身体质量指数测试</h1>
    <input type="text" placeholder="请输入身高（米）" v-model="h">
    <input type="text" placeholder="请输入体重（公斤）" v-model="w">
    <input type="button" value="测试" @click="f()">
    <h3>结果：{{result}}</h3>
</div>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdn.staticfile.org/vue/2.6.14/vue.min.js"></script>
<script>
  let v = new Vue({
    el:"body>div",
    data:{
      result:"",h:"",w:""
    },
    methods:{
      f(){
        //发出异步请求
        axios.get("/bmi?h="+v.h+"&w="+v.w).then(function (response) {
            switch (response.data){
                case 1:
                    v.result="兄弟你瘦了!";break;
                case 2:
                    v.result="身体健康!";break;
                case 3:
                    v.result="微微胖!";break;
                case 4:
                    v.result="兄弟你该减肥了!";break;
            }
        })
      }

    }
  })
</script>
</body>
</html>